btrfs-progs/libbtrfsutil/python/qgroup.c

155 lines
4.1 KiB
C

/*
* Copyright (C) 2018 Facebook
*
* This file is part of libbtrfsutil.
*
* libbtrfsutil is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* libbtrfsutil is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libbtrfsutil. If not, see <http://www.gnu.org/licenses/>.
*/
#include "btrfsutilpy.h"
static void QgroupInherit_dealloc(QgroupInherit *self)
{
btrfs_util_destroy_qgroup_inherit(self->inherit);
Py_TYPE(self)->tp_free((PyObject *)self);
}
static int QgroupInherit_init(QgroupInherit *self, PyObject *args,
PyObject *kwds)
{
static char *keywords[] = {NULL};
enum btrfs_util_error err;
if (!PyArg_ParseTupleAndKeywords(args, kwds, ":QgroupInherit",
keywords))
return -1;
err = btrfs_util_create_qgroup_inherit(0, &self->inherit);
if (err) {
SetFromBtrfsUtilError(err);
return -1;
}
return 0;
}
static PyObject *QgroupInherit_getattro(QgroupInherit *self, PyObject *nameobj)
{
const char *name = "";
if (PyUnicode_Check(nameobj)) {
name = PyUnicode_AsUTF8(nameobj);
if (!name)
return NULL;
}
if (strcmp(name, "groups") == 0) {
PyObject *ret, *tmp;
const uint64_t *arr;
size_t n, i;
btrfs_util_qgroup_inherit_get_groups(self->inherit, &arr, &n);
ret = PyList_New(n);
if (!ret)
return NULL;
for (i = 0; i < n; i++) {
tmp = PyLong_FromUnsignedLongLong(arr[i]);
if (!tmp) {
Py_DECREF(ret);
return NULL;
}
PyList_SET_ITEM(ret, i, tmp);
}
return ret;
} else {
return PyObject_GenericGetAttr((PyObject *)self, nameobj);
}
}
static PyObject *QgroupInherit_add_group(QgroupInherit *self, PyObject *args,
PyObject *kwds)
{
static char *keywords[] = {"qgroupid", NULL};
enum btrfs_util_error err;
uint64_t qgroupid;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "K:add_group", keywords,
&qgroupid))
return NULL;
err = btrfs_util_qgroup_inherit_add_group(&self->inherit, qgroupid);
if (err) {
SetFromBtrfsUtilError(err);
return NULL;
}
Py_RETURN_NONE;
}
static PyMethodDef QgroupInherit_methods[] = {
{"add_group", (PyCFunction)QgroupInherit_add_group,
METH_VARARGS | METH_KEYWORDS,
"add_group(qgroupid)\n\n"
"Add a qgroup to inherit from.\n\n"
"Arguments:\n"
"qgroupid -- ID of qgroup to add"},
{},
};
#define QgroupInherit_DOC \
"QgroupInherit() -> new qgroup inheritance specifier\n\n" \
"Create a new object which specifies what qgroups to inherit\n" \
"from for create_subvolume() and create_snapshot()"
PyTypeObject QgroupInherit_type = {
PyVarObject_HEAD_INIT(NULL, 0)
"btrfsutil.QgroupInherit", /* tp_name */
sizeof(QgroupInherit), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)QgroupInherit_dealloc, /* tp_dealloc */
NULL, /* tp_print */
NULL, /* tp_getattr */
NULL, /* tp_setattr */
NULL, /* tp_as_async */
NULL, /* tp_repr */
NULL, /* tp_as_number */
NULL, /* tp_as_sequence */
NULL, /* tp_as_mapping */
NULL, /* tp_hash */
NULL, /* tp_call */
NULL, /* tp_str */
(getattrofunc)QgroupInherit_getattro, /* tp_getattro */
NULL, /* tp_setattro */
NULL, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
QgroupInherit_DOC, /* tp_doc */
NULL, /* tp_traverse */
NULL, /* tp_clear */
NULL, /* tp_richcompare */
0, /* tp_weaklistoffset */
NULL, /* tp_iter */
NULL, /* tp_iternext */
QgroupInherit_methods, /* tp_methods */
NULL, /* tp_members */
NULL, /* tp_getset */
NULL, /* tp_base */
NULL, /* tp_dict */
NULL, /* tp_descr_get */
NULL, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)QgroupInherit_init, /* tp_init */
};